uxa: Get rid of -Wno-shift-negative-value

The minimum CS URB entry size is 1. Let's use that
instead of 0 so that we don't end up left shifting
a -1.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

src/uxa/i965_render.c

@@ -277,7 +277,7 @@ i965_check_composite_texture(ScreenPtr screen, PicturePtr picture)
 /* Set up a default static partitioning of the URB, which is supposed to
  * allow anything we would want to do, at potentially lower performance.
  */
-#define URB_CS_ENTRY_SIZE     0
+#define URB_CS_ENTRY_SIZE     1
 #define URB_CS_ENTRIES	      0
 
 #define URB_VS_ENTRY_SIZE     1	// each 512-bit row

src/uxa/i965_video.c

@@ -378,7 +378,7 @@ static void i965_post_draw_debug(ScrnInfoPtr scrn)
 #define URB_SF_ENTRY_SIZE     2
 
 #define URB_CS_ENTRIES	      0
-#define URB_CS_ENTRY_SIZE     0
+#define URB_CS_ENTRY_SIZE     1
 
 static void i965_create_dst_surface_state(ScrnInfoPtr scrn,
 					PixmapPtr pixmap,

src/uxa/meson.build

@@ -58,7 +58,6 @@ uxa = static_library('uxa',
 		     include_directories : inc,
 		     c_args : [
 		       '-Wno-deprecated-declarations',
-		       '-Wno-shift-negative-value',
 		       '-Wno-unused-parameter',
 		       '-Wno-sign-compare',
 		     ],